[ RadSafe ] Europium-252 identified instead of Bismuth-214
edmond0033 at comcast.net
edmond0033 at comcast.net
Tue Mar 24 11:04:12 CDT 2009
I believe you meant Eu-152.
Ed Baratta
edmond0033 at comcast.net
----- Original Message -----
From: "Michael McNaughton" <mcnaught at lanl.gov>
To: radsafe at radlab.nl
Sent: Tuesday, March 24, 2009 11:58:16 AM GMT -05:00 US/Canada Eastern
Subject: [ RadSafe ] Europium-252 identified instead of Bismuth-214
Dear Radsafers
I have some soil samples for which I think Bismuth-214 is incorrectly
identified as Europium-252. Is this a well-known problem?
The gamma-spec software found a small peak near 1408 keV and reported
it as 0.4 pCi/g of Europium-252, though it did not find any other
Europium-252 peaks. The sample contains about 3 pCi/g of Bismuth-214,
and has large peaks at 609 keV, 1120 keV, and 1765 keV, so I think
the small peak at 1408 keV is probably from Bismuth 214. The relative
sizes of the peaks correspond to the relative probabilities of decay
for Bismuth-214.
I would be interested in discussing this problem with gamma-spec experts.
Thanks, mike
Mike McNaughton
Los Alamos National Lab.
email: mcnaught at LANL.gov or mcnaughton at LANL.gov
phone: 505-667-6130; page: 505-664-7733
_______________________________________________
You are currently subscribed to the RadSafe mailing list
Before posting a message to RadSafe be sure to have read and understood the RadSafe rules. These can be found at: http://radlab.nl/radsafe/radsaferules.html
For information on how to subscribe or unsubscribe and other settings visit: http://radlab.nl/radsafe/
More information about the RadSafe
mailing list